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pm: schedule sysrq poweroff on boot cpu 

schedule sysrq poweroff on boot cpu.

sysrq poweroff needs to disable nonboot cpus, and we need to run this on boot
cpu to avoid any recursion.  http://bugzilla.kernel.org/show_bug.cgi?id=10897

[kosaki.motohiro@jp.fujitsu.com: build fix]
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Rus <harbour@sfinx.od.ua>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Zhang Rui 2008-07-23 21:28:40 -07:00 committed by Linus Torvalds
parent c1a220e7ac
commit 2f15fc4bdf
1 changed files with 3 additions and 1 deletions
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4
kernel/power/poweroff.c
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@ -10,6 +10,7 @@
#include <linux/pm.h>
#include <linux/workqueue.h>
#include <linux/reboot.h>
#include <linux/cpumask.h>
/*
* When the user hits Sys-Rq o to power down the machine this is the
@ -25,7 +26,8 @@ static DECLARE_WORK(poweroff_work, do_poweroff);
static void handle_poweroff(int key, struct tty_struct *tty)
{
schedule_work(&poweroff_work);
/* run sysrq poweroff on boot cpu */
schedule_work_on(first_cpu(cpu_online_map), &poweroff_work);
}
static struct sysrq_key_op sysrq_poweroff_op = {